| /* |
| * Copyright 2014-present Open Networking Foundation |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| |
| |
| package org.onlab.packet; |
| |
| import java.nio.ByteBuffer; |
| |
| import static com.google.common.base.MoreObjects.toStringHelper; |
| import static org.onlab.packet.PacketUtils.*; |
| |
| /** |
| * This class represents an Link Local Control header that is used in Ethernet |
| * 802.3. |
| */ |
| public class LLC extends BasePacket { |
| |
| public static final byte LLC_HEADER_LENGTH = 3; |
| |
| private byte dsap = 0; |
| private byte ssap = 0; |
| private byte ctrl = 0; |
| |
| public byte getDsap() { |
| return this.dsap; |
| } |
| |
| public void setDsap(final byte dsap) { |
| this.dsap = dsap; |
| } |
| |
| public byte getSsap() { |
| return this.ssap; |
| } |
| |
| public void setSsap(final byte ssap) { |
| this.ssap = ssap; |
| } |
| |
| public byte getCtrl() { |
| return this.ctrl; |
| } |
| |
| public void setCtrl(final byte ctrl) { |
| this.ctrl = ctrl; |
| } |
| |
| @Override |
| public byte[] serialize() { |
| final byte[] data = new byte[3]; |
| final ByteBuffer bb = ByteBuffer.wrap(data); |
| bb.put(this.dsap); |
| bb.put(this.ssap); |
| bb.put(this.ctrl); |
| return data; |
| } |
| |
| |
| /** |
| * Deserializer function for LLC packets. |
| * |
| * @return deserializer function |
| */ |
| public static Deserializer<LLC> deserializer() { |
| return (data, offset, length) -> { |
| checkInput(data, offset, length, LLC_HEADER_LENGTH); |
| |
| ByteBuffer bb = ByteBuffer.wrap(data, offset, length); |
| LLC llc = new LLC(); |
| |
| llc.dsap = bb.get(); |
| llc.ssap = bb.get(); |
| llc.ctrl = bb.get(); |
| |
| return llc; |
| }; |
| } |
| |
| @Override |
| public String toString() { |
| return toStringHelper(getClass()) |
| .add("dsap", Byte.toString(dsap)) |
| .add("ssap", Byte.toString(ssap)) |
| .add("ctrl", Byte.toString(ctrl)) |
| .toString(); |
| } |
| } |